Process of swaging conoidal-end bullets.



No. 771,083. PATENTED SEPT. 27, 1904.

W. MASON.

PROCESS OF SWAGING OONOIDAL END BULLETS.

APPLICATION FILED APR. 2, 1904. N0 MODEL.

UNITED STATES Patented September 27, 1904.

PATENT OFFICE.

CHESTER REPEATING ARMS CO., OF

CORPORATION.

NEIV HAVEN, CONNECTICUT, A

PROCESS OF SWAGING CONOlDAL-END BULLETS.

SPECIFICATION forming part of Letters Patent N 0, 771,083, dated September 27, 1904. Application filed April 2, 1904. Serial No. 201,197. (No model.)

T0 at whom it may concern.-

Be it known that I, WVILLIAM MAsoN, of New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Process of Swaging Conoidal-End Bullets; and I do hereby declare the following, when taken in connection with the accompanying drawings and the numerals of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a view of asoft-metal wire blank formed in accordance with my invention and shown in conjunction with the diagrammatic representation of such a Wire red as it may have been cut fromyFigQ 2, a view of one of the forms which a bullet cold-swaged from such a blank may assume; Fig. 3, a view in side elevation of one of the modified forms which the blank may assume; Fig. 4C, a correspending view ofanother modified form of blank.

My invention relates to an improved process of swaging conoidal-end bullets, the object being to produce a symmetrical conoidalend bullet free from those objectionable surface imperfections characteristic of bullets noW swaged from wire blanks or cast slugs.

ith these ends in view my invention consists in a process of swaging conoidal-end bullets consisting in forming a blank having the surface of one end inclined to the longitudinal axis of the blank and then swaging the said end into conoidal form by a properly-shaped die.

In carrying out my invention I place a wire rod 2, of suitable soft bullet metal and diameter, into a cutting-up machine of any approved character and cut it up into blanks of which each is a duplicate of the other and which are produced without any waste of metal. As shown in Figs. 1 and 2, each of these blanks has a cylindrical body portion 3 and corresponding ends 4 4*, parallel with respect to each other, inclined with respect to the longitudinal axis of the blank, and each consisting of a single surface or cut. These blanks are then cold-swaged into bullet form by being placed in swaging-dies of any approved character. The shape of these dies will be determined by the particular conoidal form which it is desired to have the bullets assume, which in turn will be determined by the circumstances of use. For illustration I have shown the production of a common form of bullet 5, having a rounded nose 6 and a flat base 7.

By the particular end conformation of my improved blanks I am enabled to swage them so as to produce symmetrical bullets without fins or folds, depressions or protuberances, or other surface imperfections such as have heretofore characterized bullets swaged from wire blanks or cast slugs. Bullets having surface imperfections present a bad appearance and are liable to be rejected on that account.

Moreover, every imperfection in the surface of a bullet, whatever the character of the imperfection may be, interferes with the symmetry of the bullet, and therefore with its trajectory and accuracy of flight. Bullets having surface imperfections are also apt to vary in weight and even if initially of the same weight are soon differentiated in weight by the scaling or flaking of their surfaces, all of which tends to decrease their value as accurate projectiles. Theoretically all bullets should conform exactly in shape and weight, so that this factor inthe operation of an arm may be constant.

My improved blanks may be used equally well for the production of the so-called soft bullets and for the cores of the so called jacketed bullets.

It is not necessary that the ends of the blanks should correspond to each other in form or in inclination. Thus the blank shown by Fig. 3 has its ends 8 and 8 differentiated from each other, one being sharp and the other blunt, but each consists of a single surface or cut and both are inclined to the longitudinal axis of the blank, which has a cylindrical body portion 9. In the blank shown by Fig. 4 one end has asingle cylindrical orconcave cut 10, While the other end has asingle cylindrical convex cut 10 these cuts beinginclined to the longitudinal axis of the blank, which has a cylindrical body portion 11. 1 would therefore have it understood that 1 do not limit myself to the exact form of blank herein shown and described, but hold myself at liberty to make such departures therefrom as fairly fall within the scope of my invention.

Having fully described my invention, What 1 claim as new, and desire to secure by Letters Patent, is-

A process of swaging conoidal-end bullets which process consists in forming a blank having the surface of one end inclined to the longitudinal axis of the blank and then swaging the said end into conoidal form bya properly-shaped die.

In testimony whereof I have signed this specification in the presence of two subscribinc; witnesses.

WILLIAM MASON.

\Vitnesses:

DANIEL H. VEADER, W n. J. DIGNAN. 

